Why does Mrs.Jacobs criticize Mr.Holland in clip 1？

Why does Mrs.Jacobs criticize Mr.Holland in clip 1？
A.Because he failed to give his students a good class.
B.Because he failed to serve as a good compass for his students.
C.Because he was off work earlier very often.
D.Because he was late for class very often.
正确答案：Because he failed to serve as a good compass for his students.